[ 1878.739601][T28789] br0: port 1(dummy0) entered blocking state
[ 1878.740252][T28789] br0: port 1(dummy0) entered disabled state
[ 1878.740467][T28789] dummy0: entered allmulticast mode
[ 1878.741418][T28789] dummy0: entered promiscuous mode
[ 1878.769146][T28790] br0: port 1(dummy0) entered blocking state
[ 1878.769420][T28790] br0: port 1(dummy0) entered forwarding state
[ 1880.802642][   T70] dummy0: left allmulticast mode
[ 1880.803673][   T70] dummy0: left promiscuous mode
[ 1880.803992][   T70] br0: port 1(dummy0) entered disabled state